Barrel nut for a firearm



FIG. 1 is a front perspective view of a barrel nut according to the newdesign;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top view thereof, the bottom view being a mirror imagethereof; and,

FIG. 6 is a right side elevation view thereof, the left side elevationview being a mirror image thereof.

CLAIM The ornamental design for a barrel nut for a firearm, as shown anddescribed.